Just a point here that since two of the primary founders / inventors are on the faculty of UNC Chapel Hill, this technology likely arose from work in their labs on campus. That means it could fall under the UNC Patent Policy [1]. It would then be up to UNC to make the determination on how to best protect the IP and commercialize it. Universities have large patent budgets and do their best to protect their IP until suitable commercial partners can found to take over the patent costs and bring the technology to market.

1: http://policy.sites.unc.edu/files/2013/05/Patent-Invention.p...